As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C-18 CHECK, 18 CRACKS WERE FOUND AT FASTENER HOLES IN LOWER SURFACE SKIN OF NR 5 SLAT BETWEEN SLAT STA 150 AND SLAT STA 235. MAINTENANCE CUTOUT DAMAGE ON LOWER SURFACE SKIN OF NR 5 SLAT; PERFORMED A HFEC INSPECTION OF CUTOUT TO VERIFY NO CRACKS EXIST; FABRICATED A FILLER AND SPLICE PLATE; INSTALLED REPAIR PARTS IAW B737-300 SRM 57-43-01, FIG 206.